Openshift edits

Mostly minor edits but one medium change that requires a replacement screenshot: before you've added an SSH key to OpenShift, there is no "add a new SSH key" option -- instead there is a "Public Keys" section right in the page with a field to paste your key into. You also cannot add a name for the key (it just gets named default -- annoying!)

I commented out a the old screenshot, took a new one, and added a link to it that's currently in my Dropbox, but figured you'd want to move the screenshot to your own image hosting (see TODO comment in file).